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Stroke etiologic subtype may influence the rate of hyperdense middle cerebral artery sign disappearance after intravenous thrombolysis
This study suggests that stroke due to LAA is associated with lower rates of HMCAS disappearance, neurologic improvement, and mRS ≤1 after IV thrombolysis, compared with cardioembolic stroke.
Source: Journal of Thrombosis and Thrombolysis - December 31, 2016 Category: Hematology Source Type: research

A Genetic Variant in GOLGB1 Affects Golgi Function and Stroke Risk in Patients with Sickle Cell Disease
Conclusions: Our study has shown that a coding variant in GOLGB1, identified as protective against risk of stroke in patients with SCD, has significant effects on Golgi function in SCD samples. We observed that having the GOLGB1 Y1212C variant resulted in more compact and less fragmented Golgi apparatus. Proteomic analysis showed that SCD patients with the GOLGB1 variant also had significantly lower levels of proteins involved in platelet activation and Golgi trafficking. Our findings suggest a novel role for the Golgi apparatus in controlling protein flux that modulates risk of stroke in SCD.DisclosuresNo relevant conflic...
Source: Blood - November 21, 2018 Category: Hematology Authors: Kotu, V., Dubrelle, J., Baker, J., Jenson, K., Flanagan, J. M. Tags: 113. Hemoglobinopathies, Excluding Thalassemia-Basic and Translational Science: Poster III Source Type: research

Introduction of direct oral anticoagulant within 7  days of stroke onset: a nomogram to predict the probability of 3-month modified Rankin Scale score  & gt;  2
AbstractIn clinical practice, direct oral anticoagulants (DOACs) are often started earlier ( ≤ 7 days) than in randomized clinical trials after stroke. We aimed to develop a nomogram model incorporating time of DOAC introduction ≤ 7 days of stroke onset in combination with different degrees of stroke radiological/neurological severity at the time of treatment to predict the prob ability of unfavorable outcome. We conducted a multicenter prospective study including 344 patients who started DOAC 1–7 days after atrial fibrillation-related stroke onset. Computed tomography scan 24–36 h after stroke onset was ...
Source: Journal of Thrombosis and Thrombolysis - September 10, 2018 Category: Hematology Source Type: research

The management of patients with acute ischemic stroke while on direct oral anticoagulants (DOACs): data from an Italian cohort and a proposed algorithm
This study aimed at investigating whether there is any relationship between DOAC plasma levels and the stroke occurrence, on the basis of the phenotypic classification and pathophysiology of the stroke, in a cohort of DOAC-treated patients admitted to our hospital for AIS o ver 1-year period. A total of 28 patients had DOAC plasma levels determined in emergency and were included in the study, nine patients receiving dabigatran, 11 rivaroxaban and 8 apixaban. The DOAC levels were low in 8/28 patients (28.6% of the sample), intermediate in 4 (14.3%) and high in 16 (57.1% ). The most prevalent stroke subtype was the small ves...
Source: Journal of Thrombosis and Thrombolysis - April 16, 2020 Category: Hematology Source Type: research

Early introduction of direct oral anticoagulants in cardioembolic stroke patients with non-valvular atrial fibrillation
AbstractDirect oral anticoagulants (DOACs) are superior to warfarin in reduction of the intracranial bleeding risk. The aim of the present study was to assess whether early DOAC introduction (1 –3 days after onset) in stroke patients with non-valvular atrial fibrillation (nVAF) may be safe and effective, compared with DOAC introduction after 4–7 days. We conducted a prospective analysis based on data collected from 147 consecutive nVAF patients who started DOAC within 7 days after stro ke onset. In all patients, we performed pre-DOAC CT scan 24–36 h after onset and follow-up CT scan at 7 days after DOAC introduction...
Source: Journal of Thrombosis and Thrombolysis - September 3, 2016 Category: Hematology Source Type: research

Circulating microaggregates during cardiac surgery precedes postoperative stroke
This report presents intraoperative microcirculation-based evidence suggesting that observations of microaggregations, otherwise undetected by conventional anticoagulation assessment techniques, could serve as an early warning in elderly patients at high risk for postoperative cerebrovascular events.
Source: Journal of Thrombosis and Thrombolysis - May 22, 2017 Category: Hematology Source Type: research

Transcranial color Doppler in stroke-free adult patients with sickle cell disease
AbstractThe threshold velocity ≥200 cm/s at transcranial Doppler (TCD) evaluation is a useful cut-off for preventing the stroke (STOP trial) in pediatric patients with sickle cell disease (SCD), term including different types of sickle genotypes. Scanty data are available for adult SCD patients. We compared intracranial blood flow velocities between adult SCD patients and controls using transcranial color Doppler (TCCD), measuring the peak of systolic velocity (PSV) with the insonation angle correction and the pulsatility index (PI), an indicator of endothelial elasticity. Fifty-three adult SCD patients (aged>18  ye...
Source: Annals of Hematology - August 1, 2017 Category: Hematology Source Type: research

Association of blood viscosity with first-pass reperfusion in mechanical thrombectomy for acute ischemic stroke.
CONCLUSIONS: Elevated DBV was associated with FPR failure. Patients with high DBV had longer thrombus length and required more stent passages than patients with low DBV. PMID: 33074222 [PubMed - as supplied by publisher]
Source: Clinical Hemorheology and Microcirculation - October 13, 2020 Category: Hematology Authors: Song K, Yi HJ, Lee DH, Sung JH Tags: Clin Hemorheol Microcirc Source Type: research

Transcranial Doppler Screening in a Regional Care Network for Sickle Cell Disease in the United Kingdom
The risk of stroke in children screened with transcranial Doppler ultrasound in the United Kingdom is not known. We evaluated a clinician-led program using a risk assessment modified from the STOP protocol. High-risk classification included abnormal velocities in the anterior cerebral artery, and single abnormal scan if initial velocity>220 cm/s (high abnormal) or if preceded by at least 2 conditional scans. In total, 1653 scans were performed in 542 children, followed for 2235 patient-years. Fifty-eight (10.7%) high-risk subjects were identified, including 18 (31%) with high abnormal, and 15 (26%) with previous conditiona...
Source: Journal of Pediatric Hematology Oncology - September 30, 2016 Category: Hematology Tags: Original Articles Source Type: research

Associations of activated coagulation factor VII and factor VIIa ‐antithrombin levels with genome‐wide polymorphisms and cardiovascular disease risk
ConclusionsResults support the importance of the F7 and PROCR loci on variation in circulating FVIIa and FVIIa‐AT. Findings suggest FVIIa is a risk factor for ischemic stroke in older adults while higher FVIIa‐AT may reflect mortality risk.This article is protected by copyright. All rights reserved.
Source: Journal of Thrombosis and Haemostasis - November 1, 2017 Category: Hematology Authors: N. C Olson, L. M Raffield, L. A Lange, E.M. Lange, W. T Longstreth, G. Chauhan, S. Debette, S. Seshadri, A. P Reiner, R. P Tracy Tags: Original Article ‐ Coagulation Source Type: research

Associations of activated coagulation factor VII and factor VIIa-antithrombin levels with genome-wide polymorphisms and cardiovascular disease risk.
CONCLUSIONS: Results support the importance of the F7 and PROCR loci on variation in circulating FVIIa and FVIIa-AT. Findings suggest FVIIa is a risk factor for ischemic stroke in older adults while higher FVIIa-AT may reflect mortality risk. This article is protected by copyright. All rights reserved. PMID: 29112333 [PubMed - as supplied by publisher]
Source: Thrombosis and Haemostasis - November 7, 2017 Category: Hematology Authors: Olson NC, Raffield LM, Lange LA, Lange EM, Longstreth WT, Chauhan G, Debette S, Seshadri S, Reiner AP, Tracy RP Tags: J Thromb Haemost Source Type: research

Cerebral Infarcts and Cerebrovascular Disease in Neurologically Intact Tanzanian Children with Sickle Cell Anaemia
Conclusions:The prevalence of SCI on MRI is high in children with SCA without neurological history living in Africa even when TCD CBFV is normal. Children and adolescents with all grades of vasculopathy on MRA are at higher risk of brain parenchymal injury. The lack of association between SCI and hemoglobin may be related to the relatively severe anemia in our African study. As MRA contrast depends on velocity of blood flowing in vessels, it is not surprising that Grade 1 turbulence on MRA appears to reflect high CBFV on TCD. Importantly, high TCD velocity and Grade 1 turbulence may reflect the potentially reversible early...
Source: Blood - November 21, 2018 Category: Hematology Authors: Mwakatika, M. M., Saunders, D. E., Makani, J., Kirkham, F. J. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Poster I Source Type: research

Burden and Risk of Neurological and Cognitive Impairment in Pediatric Sickle Cell Anemia in Uganda (BRAIN SAFE): Final Results of the Cross-Sectional Analysis
Conclusions: These data demonstrate early, frequent neurovascular pathology for each outcome tested. Abnormal neurocognitive test results significantly increased with age or non-normal TCD. Our findings provide a baseline for longitudinal assessment and incentive for intervention. Enhanced research capacity was gained for junior faculty, trainees and staff, in areas of the conduct of brain research and focus on pediatric SCD, TCD performance and neuro-epidemiology.Funding: 1R21HD089791 (PIs: Idro, Green)DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: Green, N. S., Munube, D., Bangirana, P., Opoka, R., Kayongo, E., Mupere, E., Buluma, L. R., Kebirungi, B., Sekibira, R., Kiguli, S., Kawooya, M., Lubowa, S. K., Elkind, M. S. V., Li, G., LaRussa, P., Idro, R. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Poster II Source Type: research

Brain Magnetic Resonance Imaging and Angiography Findings in Ugandan Children with Sickle Cell Anemia; A Cross Sectional Study
ConclusionsBrain injury in Uganda children with SCA begins early in childhood and becomes a common finding during later childhood. Early screening for stroke and intervention therapy is warranted to prevent sickle brain vasculopathy initiated early after diagnosis. The risk factors for such early brain injury should be investigated.DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: Idro, R., Green, N. S., Munube, D., Buluma, L. R., Kebirungi, B., Opoka, R., Bangirana, P., Mupere, E., Kayongo, E., Sekibira, R., Kasirye, P., Lubowa, S. K., Kawooya, M., LaRussa, P., Minja, F. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Poster II Source Type: research

Efficacy and Safety of Direct Oral Factor Xa Inhibitors in 795 Morbidly Obese Patients
Conclusions: Our study is the largest study examining morbidly obese patients on DOACS and provides further evidence of comparable efficacy and safety of the direct oral anti-Xa inhibitors, compared to warfarin, in morbidly obese patients with AF and VTE.DisclosuresKushnir: Janssen: Research Funding. Billett: Bayer: Consultancy; Janssen: Research Funding.
Source: Blood - November 21, 2018 Category: Hematology Authors: Kushnir, M., Choi, Y., Eisenberg, R., Rao, D., Tolu, S., Gao, J., Mowrey, W., Billett, H. H. Tags: 332. Antithrombotic Therapy: Management of Challenging Patients and Scenarios Source Type: research

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